I am using the Microsoft Chart Controls Chart class in System.Web.UI.DataVisualization.Charting and have a problem with a line series looking very jagged.
I am setting up my chart like so:
chart.AntiAliasing = AntiAliasingStyles.All;
chart.TextAntiAliasingQuality = TextAntiAliasingQuality.High;
chart.BackColor = Color.White;
And my series is a basic SeriesChartType.Line type. I am rendering as a PNG (have also tried BMP and JPG), but the end result it still like the below. I have also tried increasing the line width, but this just makes it more obvious. Is it possible to smooth out the line?
Related
Link to how it looks like http://puu.sh/hc4aJ/1cb4c189b0.png
I have multiple charts in my form and they can have different Y-axis labels. But when I add those different axis labels this happens. I haven't found any option to set a margin or something so that the graphs will be aligned.
Every graph has the same location and size settings.
chart.Size = new Size(1000, 190);
chart.Location = new Point(0, 0);
Anybody got a solution?
If all chart areas are in the same chart, you can use the AlignWithChartArea-Property.
chartArea1.AlignWithChartArea = "ChartArea2";
I have a problem with exporting a chart. I use the ChartFX chart with
chart.ExportImageSize = new Size(600, 450);
and if the size of the image is larger than this (1127, 537), it cuts the right and the bottom border in the exported image.
For exporting, I use simple
chart.Export(FileFormat.Bitmap);
No custom controls are used in exporting the chart, and the chart looks normal in the application (borders all around, and I use simple black border).
Few interesting things I realized trying to solve this.
First I have no border
chart.Border = new SimpleBorder(SimpleBorderType.None, cOffice2007BackColor);
Than, I add the new border object just to export the chart with the border.
chart.Border = new SimpleBorder(SimpleBorderType.Color, Color.Black);
chart.Export(FileFormat.Bitmap);
Than I revert the border. And, it exports the chart with the new border, but it doesn't resize the border. If it's larger than ExportImageSize, I see only left and top border, and if it's smaller, I get a part of the chart that goes outside the borders.
So, I set the the border to begin with, and only change the color for the exporting.
One more realization, explicitly setting the ExportImageSize can lead to some interesting side-effects. Even dough your plot looks really good, it sometimes cuts the legend, if it is to large
How does one set the alignment of text within a chart legend object? I've tried using:
myChartName.Legends["mySeriesName"].Alignment = stringAlignment.Near
With no effect. I've also tried to create custom legend items, again resulting in no effect. Text is ALWAYS centered (along with the series marker) in the legend "box". The only text I have been able to align is the title, but I don't need titles in my application.
My research to date says the legend object is basically a table with (by default) two cells. If that is the case there should be a way to access those cells and manipulate them as table cells. So, what gives? Why can't I access the text alignment properties of the legend object? Clearly, there is something I'm missing, but for the life of me I can't seem to figure this out. Quite frustrating.
Problem solved. The CustomItem approach wasn't working either, so I tried using the LegendCellColumn Class.
I changed the LegendStyle from Column to Row, then added two CellColumns, one for the series symbol and one for the legend text. Set the alignment, margins, and column widths (that turned out to be the trick), and voila; a legend that looks like I want. Here's the code for anyone with a similar issue.
chartSel.Legends[ySeries.Name].CellColumns.Add(new LegendCellColumn("", LegendCellColumnType.SeriesSymbol, ""));
chartSel.Legends[ySeries.Name].CellColumns[0].Alignment = ContentAlignment.TopLeft;
chartSel.Legends[ySeries.Name].CellColumns[0].Margins = new System.Windows.Forms.DataVisualization.Charting.Margins(0, 0, 1, 1);
chartSel.Legends[ySeries.Name].CellColumns[0].MinimumWidth = 250;
chartSel.Legends[ySeries.Name].CellColumns[0].MaximumWidth = 250;
chartSel.Legends[ySeries.Name].CellColumns.Add(new LegendCellColumn("", LegendCellColumnType.Text, ySeries.Name));
chartSel.Legends[ySeries.Name].CellColumns[1].Alignment = ContentAlignment.MiddleLeft;
chartSel.Legends[ySeries.Name].CellColumns[1].Margins = new System.Windows.Forms.DataVisualization.Charting.Margins(0, 0, 1, 1);
chartSel.Legends[ySeries.Name].CellColumns[1].MinimumWidth = 1500;
chartSel.Legends[ySeries.Name].CellColumns[1].MaximumWidth = 1500;
It's probably not the most efficient way to do it, but it works. Technically, the legend symbol and text are still centered in the object, but because I'm forcing the widths of the two columns it has the appearance of being left-justified.
Hopefully, this may help another newbie like me avoid days of consternation.
My understanding is that Legend alignment relates to the Docking property, not really how the text is aligned within the legend. So setting Alignment to Near means positioning the legend box near the Docking direction.
It is quite hard to explain this textually. The MS Chart Samples have a subsection named Chart features -> Legends -> Style and Auto Positioning which will help you play with those two properties and understand how they are meant to work.
For inner legend alignment, you may need to use Legend.CustomItems and define LegendCell individually.
chart.Legends["Default"].CustomItems.Clear();
chart.Legends["Default"].CustomItems.Add(new LegendItem("LegendItem", Color.Red, ""));
chart.Legends["Default"].CustomItems[0].Cells.Add(new LegendCell(LegendCellType.Text, "My text", ContentAlignment.MiddleLeft));
This is described inside the Chart features -> Legends -> Legend Cells section of the samples.
While continuing to try to figure this out I stumbled on this tidbit of info from the following MSDN library page:
http://msdn.microsoft.com/en-us/library/dd456711(v=vs.100).aspx
"NOTE: You cannot adjust the individual legend items and cells in the Chart.Legends collection. To adjust them, use custom legend items."
So, back to the CustomItem route. I've got this code gleaned from several sources (including you, Dominique, thanks):
chartSel.Legends.Add(ySeries.Name);
chartSel.Series[ySeries.Name].IsVisibleInLegend = false;
chartSel.Legends[ySeries.Name].CustomItems.Clear();
LegendItem li = new LegendItem();
li.ImageStyle = LegendImageStyle.Line;
li.Cells.Add(LegendCellType.SeriesSymbol, "", ContentAlignment.TopLeft);
li.Cells[0].BackColor = Color.CornflowerBlue; //color is only to see the cell bounds
li.Cells.Add(LegendCellType.Text, ySeries.Name, ContentAlignment.TopLeft);
li.Cells[1].BackColor = Color.Aquamarine; //color is only to see the cell bounds
chartSel.Legends[ySeries.Name].CustomItems.Add(li);
From what I can find it should work, but it doesn't. It results in a legend object with two cells; the first is empty and the second has left-justified text. I tried to post an image of it, but the system says I'm not yet worthy.
Why there is no line for the series symbol is also a mystery, but that's another problem to solve. The text justification issue is my main concern at the moment. It looks like the text within the cells is left-justified as desired, but the cells themselves are centered in the legend object; not what I wanted. I want those cells to be left-justified in the object too, so the first cell is against the left edge of the legend object.
Ideas?
Hi I am using Ms chart control in winforms application for displaying values according to dates
I need to change the x-axis label values(Dates) direction horizantal to vertical
I have searched so many properties but i did not find any solution for this.
Any one help me on this problem
Many Thanks ....
As I understand your question - you are asking how to rotate the chart label to display vertically.
You can rotate the x-axis label as follows:
chart1.ChartAreas[0].AxisX.LabelStyle.Angle = -90;
This assumes you have associated your series with the first chart area, which is the default without modification when using the Winforms designer.
The following images shows how the chart would look before the code above is applied, the second image shows how it appears after the code is applied.
Let me know if this is not what you are trying to do and I will post an updated answer.
Before rotation
After Rotation
Edit: Another answer added after my initial post mentions in certain situations it may be important to set chartArea1.AxisX.IsLabelAutoFit = false;
If you have not already done so, get the chart samples from microsoft:
http://archive.msdn.microsoft.com/mschart
Then check the section on Labels
Chart Features > Labels
To answer your question directly, set the angle in LabelStyle, and don't forget to disable autofit
chartArea1.AxisX.IsLabelAutoFit = false;
chartArea1.AxisX.LabelStyle.Angle = 90;
like two guys before me there and second one there I have difficulty with 3D chart.
How to force them to be transparent like this picture:
taken from 3D Area chart example shipped with ASP.NET Chart controls. This chart has ChartColorPalette.BrightPastel pallete, but is transparent.
I have also 3D chart with ChartColorPalette.BrightPastel palette, but is not transparent and I still cannot found way how to make it transparent like example chart. (After examining example markup and codebehind):
The only way I've found is to set the color of series with alpha channel for transparency, or use color palette with transparent colors (for example ChartColorPalette.SemiTransparent) but there must be some other default way which I'm missing.
Reason I really need this to know is that I'm creating graphs without any code behind just using markup, so I'm finding it a little bit redundant to create code snippets only because of this.
Thank you very much for any answers.
Edit: I'm using .NET 3.5 version of ASP.NET charts.
I'd same problem here. Solved using this:
// After all series manipulation, add this
chart.ApplyPaletteColors();
foreach (var serie in chart.Series)
serie.Color = Color.FromArgb(220, serie.Color);
I see you're on this thread too. Unfortunately, you do need to use colors with an alpha channel in order to set transparency AFAIK
Here's a good overview of the palettes available and some basics on manipulating them
My guess is that you could create a new palette by iterating over the colors in the bright pastel palette and adding an alpha channel - if you do this in a global static, perhaps as part of your webapp init logic, you should be able to reference it pretty easily - if you don't want to have any codebehind, you ?may? be able to databind your custom palette to the CustomPalette property, but I can't say with certainty.
If you do use palette, and not one color per series, you have to set color for every point:
myChart.ApplyPaletteColors();
foreach (var series in myChart.Series)
{
foreach (var point in series.Points)
{
point.Color = Color.FromArgb(220, point.Color);
}
}